Dow -DOWSIL™ Contractors Weatherproofing Sealant

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A one-part, moisture cure, medium modulus sealant that provides durable, flexible, watertight joints and offers outstanding unprimed adhesion to most non-porous substrates. It is specifically developed for sealing dynamically moving joints.


Category: UV resistant sealants | caulking compounds | caulks...

MasterFormat: Joint Protection | Joint Sealants



Dow
Corporate Center
PO Box 994
Midland, MI 48686
Tel: (586) 496-4000

https://www.dow.com/en-us.html

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Overview


DOWSIL™ Contractors Weatherproofing Sealant

A one-part, moisture cure, medium modulus sealant that provides durable, flexible, watertight joints and offers outstanding unprimed adhesion to most non-porous substrates. It is specifically developed for sealing dynamically moving joints.

Uses:

  • Dynamically moving joints such as expansion and control joints
  • Concrete panel joints
  • Tilt-up panel joints
  • Curtainwall joints
  • Frame-to-structure and perimeter caulking of windows, doors, panels, EIFS, bedding of mullions, panels and frames, etc.
Benefits:
  • Primerless on EIFS and most common nonporous building substrates, including glass and aluminum
  • Balanced adhesive strength, medium modulus and high recovery
  • Excellent all-weather gunnability and performance
  • Extension/compression capability of ±25 to ±40 percent
  • Available in 10.3 ounce cartridges, 20 ounce sausages and two gallon pails
  • Choose from 20 standard colors, 19 special colors and custom colors, too
  • 5 Year Weatherseal Limited Warranty

No-compromise silicone sealing

This versatile, one-part 100% silicone sealant delivers outstanding life-cycle value and lower installed costs at a price that is competitive in the market. Virtually unaffected by ultraviolet (UV) light and weather extremes, DOWSIL™ Contractors Weatherproofing Sealant provides all-weather application and performance.


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Specifications

Typical Properties

Adhesion to

Alodine Aluminum, Aluminum, Anodized Aluminum, Brickwork, Ceramic, Concrete, Enamelled and Reflective Glass, Extruded Mill Finish, Fluorocarbon Coated Aluminum, Glass, Granite, Heat Strengthened Glass, Light-Weight Stone Panels, Limestone, Low E Coated Glass, Marble, Masonry, Metal, Metal Panels, Paint, Plastic, Polyester Powder Coated Aluminum/Steel, Stainless Steel, Steel, Stone, Vinyl/PVC-U, Wood

Appearance

Opaque

Application Temperature Range

-29 to 49 °C

Chemistry

Neutral

Color

Aluminum, Anodized Aluminum, Antique White, Black, Bronze, Buff, Charcoal Gray, Custom, Geographic Beige, Grey, Ivory, Light Bronze, Limestone, Mountain Fog, Off-White, Precast White, Redwood Tan, Sandlewood, Sandstone, White, Window Bronze

Cure System

1-Part Cure

Cure Type

Neutral Cure

Durometer - Shore A

20 to 30 Shore A

Elongation

550 %

Movement

Medium

Movement Capability

-40 to 40 %

Number of Parts

One

Peel Strength

20 to 28 ppi

Primerless Adhesion

Primerless

Resistance Type

Ozone Resistance, Thermal Resistance, UV Resistance, Water Resistance

Room Temperature Cure - Hours

168 to 336 Hours

Service Temperature High

121 °C

Service Temperature Low

-40 °C

Shelf Life

540 Days

Substrate

Porous

Tack-Free Time-50% RH

360 Minutes

Tensile Strength

180 psi

Volatile Organic Content

35 g/liter

Where Used

Job Site